Humus
The bodies of dead sea animals and plants that lived in the past. In turn these animals obtained the carbon form the atmosphere and oxygen and hydrogen fro water (using the process of photosynthesis.
carbon compounds reacts with water and form methane
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They turn into the soil they become part of the ground.
Starch is the storage form of carbohydrates in plants. In contrast, glycogen is the storage form of carbohydrates in animals.
Rocks that form from dead plants and animals that have been compressed are called sedimentary rocks. Examples include coal, which forms from compressed plant matter, and limestone, which can contain compressed remains of marine organisms. This process of transformation over time is known as diagenesis.
Dead plants and animals are helpful because when they decompose, the bacteria help release certain nutrients into the ground that plants thrive on. Sort of like if one plant releases nitrogen into the soil and then is planted next to a plant that thrives on it.
Dead plants and animals
Organic material such as dead plants and animals is pressed down underground over millions of years to form fossil fuels. This process involves heat and pressure transforming the organic material into substances like coal, oil, and natural gas.
The matter from the dead plants and animals is broken down by decomposers like bacteria and fungi. It is then recycled back into the ecosystem in the form of nutrients, which can be taken up by plants to support new growth. This process is essential for sustaining life in the ecosystem.
Plants primarily obtain nitrogen from the soil in the form of nitrates and ammonium, which are produced through the decomposition of organic matter and the activity of nitrogen-fixing bacteria. Animals, in turn, acquire nitrogen by consuming plants or other animals, incorporating the nitrogen from their food into their own bodies. Additionally, some plants can form symbiotic relationships with nitrogen-fixing bacteria, allowing them to directly access atmospheric nitrogen through root nodules. Overall, nitrogen cycling in ecosystems ensures that both plants and animals have access to this essential nutrient.
We get the nitrogen our bodies need by eating food.